ASTROSAT CZTI

Data Quality Report

Orbit 42479

Creation date: 2024-06-27T22:40:41.132929
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T10_9000005806_42479cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42479cztM0_level2_quad_clean.evt
Size (bytes)379,946,88088,977,600
Size362.3 MB 84.9 MB
Events in quadrant A3,055,484615,736
Events in quadrant B2,551,847615,862
Events in quadrant C2,635,150596,721
Events in quadrant D5,374,748464,296

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125812
B0118632
C0116892
D0200929

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736140.244073%
B5736200.348675%
C5736100.174338%
D5735111919.511770%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7078 5737 4 4 0.06% 0.07%
B 7078 5737 10 10 0.14% 0.17%
C 7078 5737 2 2 0.03% 0.03%
D 7077 5736 1066 1066 15.06% 18.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 622568 5001.65 602 590 124.4
A 12 189 63596 506.66 602 590 124.4
A 13 6 21442 167.68 602 590 124.4
B 5 172 76289 661.35 594 577 114.5
B 0 186 69338 600.64 594 577 114.5
B 5 207 20532 174.31 594 577 114.5
C 15 214 238899 1727.98 586 590 137.9
C 14 254 56742 407.16 586 590 137.9
C 12 249 24004 169.77 586 590 137.9
D 2 16 2135141 15754.04 553 536 135.5
D 1 52 199545 1468.75 553 536 135.5
D 12 233 178826 1315.84 553 536 135.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter